WAGR Dd class

WAGR Dd class
Dd592 passes through Jandakot with an ARHS excursion train, 1986
Type and origin
Power typeSteam
BuilderMidland Railway Workshops
Build date1946
Total produced10
Specifications
Configuration:
​
 • Whyte4-6-4T
Gauge3 ft 6 in (1,067 mm)
Driver dia.4 ft 6 in (1,372 mm)
Length43 ft 3 in (13.18 m)
Loco weight72 long tons 0 cwt (161,300 lb or 73.2 t)
Fuel typeCoal
Water cap.1,820 imp gal (8,300 L; 2,190 US gal)
Firebox:​
 • Grate area18.6 sq ft (1.73 m2)
Boiler pressure160 lbf/in2 (1.10 MPa)
Cylinder size18 in × 23 in (457 mm × 584 mm)
Valve gearWalschaerts
Performance figures
Tractive effort18,768 lbf (83.48 kN)
Factor of adh.4.7
Career
OperatorsWestern Australian Government Railways
NumbersDd591-Dd600
NicknamesDonald Ducks
PreservedDd592, Dd596
Disposition2 preserved, 8 scrapped

The WAGR Dd class was a class of 4-6-4T tank locomotive operated by the Western Australian Government Railways (WAGR) between 1946 and 1972.

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